Burning hydrocarbons



(No Model.)

` H T. LITGHFIELD 8v D. RENSHAW.

BURNING' HYDROGARBON. No. 251,785. Patented Jam-3,1882.

N, Perlas, Plwnrumugmpnun wam nnnnnnn u UNITED STATES APATENT OFFICE. I

HARVEY T...LITCHF1ELD, OF HULL, AND DAVID RENSHAW, OF C'OHASSET,

` MASSACHUSETTS.

BURNING HYDROCARBONS.

SPECIFICATION forming part of Letters Patent No. 251,785, dated January3, 1882.

l Application tiled March 7, 1881. (No model.) V

To all whom it may concern Be it known that we, HARVEYT. LITCH- FIELD, acitizen of the United States, residing at Hull, in the county ofPlymouth and State 5 of Massachusetts, and DAVID RENsHAW, a citizen ofthe United States, residing at Cobasset, inthe county of Norfolk andState aforesaid, have invented certain new and useful Improvements inBurning Hydrocarbons; and we to do hereby declare that the following'isa full, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains tomake and use thesame, reference being had to the accompan ying drawl ings.

Thisinvention has for its object the proper distribution ofa hydrocarbonmixture ofsteam and air, or the vapor or gases of such mixture, within afurnace in such `manner that it is 2o evenly distributed over the entiresurface of d the fuel, and in such manner as that the gases of themixture will unite with the gases evolved from thefuel, whereby acomplete combustion will take place. Its further object. is to use thesaid mixture in a furnace independent of any other fuel-that is to say,that by the construction and arrangement of a rotary pipe properlysupplied with the vapor and gases of hydrocarbon oil, steam, superheatedsteam, 3o and air, (the air heated, if desired,) or without air, Iproduce `an intense and an even heat in a furnace.

Itis well known thathydroearbon oils, steam, and air have beenintroduced into furnaces by various means, and that many attempts havebeen made to supply this'I combined mixture to furnaces. Y It is alsowell known that much difliculty has been experienced in properlydistributing it in such manner as to heat all parts 4o of the boiler orfurnace evenly. It is further known that lthis mixture of oil, steam,and air has been blown against parts of the boiler in such manner as toact as a blow-pipe, thus pitting, blistering, and burning the boiler orany 4 5 surface against which it is thrown. Therefore, to remedy theseevils are further objects of our invention; and to this end it consists,first, in j locating a perforated pipe or pipes either acrossorlengthwise of afurnace,the pipe beingadapt- 5o ed to rotate, andpreferably resting in journals in the furnace-wall, said pipe performingthe function of a retort as well as a distributer, the fuel lmixturebeing forced in and through under pressure; secondly, in providing therotating pipewith inner projecting nipples or projections, eitherscrewed into or cast thereon, said nipples or projections having outercommunications for the passage of the fluid gases to the furnace; third,the rotating perforatedpipc provided with motive-power attachments,swivel-joints, and air, steam, and oil conduit pipes, the'swivel-jointbeing for the purpose of allowing the perforated pipe to rotate,while atthe same time it is jointed to the stationary conduit-pipes.

Referring more particularly to the accompanying drawings, Figure l showsa cross-section of a furnace enlbodying'our invention; Fig. 2, across-section of a plain .perforated .pipe 5 Fig. 3, a cross-section ofthe perforated pipe, showing the nipples or projections on its innerside. Figs. 4t and 5 are modifications .showing the application of theinvention in an upward or downward position.

' Like letters of reference indicate like parts in all the gures.

A is the furnace-wall; B, the furnace-chamber; C, the grate-bars, and Dthe ash-pit. E is the perforated pipe; f, the perforations. a is theunion of the supply-conduits. b b are the driving pulleys or motivepowerattachments. o 1 are the swivel-joints, and d d2 d3 are thesupply-conduits. In this instance a bracket is shown as a support forthe outside parts of the perforated pipe; but it is evident anywell-known means may be employed. All these parts maybe applied to theup-and-down or vertical pipes, as shown at Figs. 4 and 5.

Fig. 3 shows the inner projections, which may be of any desired form ormake. The oh-` ject of these inner projections is to retain the mixtureof the various elements forming the gas (particularly the oil)sufciently long to convert it to a gas, or, as may be said, toa xed gas.While as a rule the mixture is complete wllen it enters the pipe, stillsome oil or residuum might enter the perforated pipe, and by means ofthe projections it cannot escape` until it is converted into gas. Thusit will be seen that the pipe itself is a lirst-class retort. roo d Itwill be observed that this device is cheap in first cost, readilyapplied to almost any form or kind of furnace, easily manipulated,removed, and replaced. All the parts beinzgr interchangeable, anyWorn-out part may be supplied.

The conduits are of course provided with properv controlling-cocks, sothat the richness of the niixtuie may be regulated. The same may be saidof the quantity of heat or dame required. Thus it will be seen that theentire apparatus is under the complete control of the operator.

Having now described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In a hydrocarbon-furnace, the perforated rotating pipe extendingacross or lengthwise of the furnace, the mixture in said pipe heiligforced through and disseminated by steampressure, substantially as setforth.

2. In a hydrocarbon-furnace, the rotating pipe providedV on its innerside with nipples or projections, the projections being provided withcommunications through them, said projections being adapted to retainwithin the pipe any liquid fuel until it is converted into gas,substantially as shown and described.

3. The combination, in ashydrocarbon-furnace provided with a rotatingperforated pipe, of the motive power attachments and the swivel -jointwith the fuel-supply conduit-s, whereby fuel is fed to the rotary pipeWhile in operatiornin the manner shown and described.

H. T. LllTCHFIELD. DAVID RENSHAW.

Witnesses:

UHAs. F. SLEEPER, A. S. EITHER.

